Bug 1564639 (CVE-2018-9275) - CVE-2018-9275 pam_yubico: Information disclosure in check_user_token in util.c
Summary: CVE-2018-9275 pam_yubico: Information disclosure in check_user_token in util.c
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: CVE-2018-9275
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1564640 1564641
Blocks:
TreeView+ depends on / blocked
 
Reported: 2018-04-06 18:38 UTC by Pedro Sampaio
Modified: 2019-09-29 14:35 UTC (History)
3 users (show)

Fixed In Version:
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Clone Of:
Environment:
Last Closed: 2018-11-16 17:22:19 UTC


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Description Pedro Sampaio 2018-04-06 18:38:46 UTC
In check_user_token in util.c in the Yubico PAM module (aka pam_yubico) 2.18 through 2.25, successful logins can leak file descriptors to the auth mapping file, which can lead to information disclosure (serial number of a device) and/or DoS (reaching the maximum number of file descriptors).

Upstream Issue:

https://github.com/Yubico/yubico-pam/issues/136

Upstream patch:

https://github.com/Yubico/yubico-pam/commit/0f6ceabab0a8849b47f67d727aa526c2656089ba

Comment 1 Pedro Sampaio 2018-04-06 18:39:15 UTC
Created pam_yubico tracking bugs for this issue:

Affects: fedora-all [bug 1564641]
Affects: epel-all [bug 1564640]

Comment 2 Nick Bebout 2018-07-23 16:02:44 UTC
updates are pending push to testing.


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